Subtract 50/40 from 3/70
1st number: 3/70, 2nd number: 1 10/40
3/70 - 50/40 is -169/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
3/70 = 3 × 4/70 × 4 = 12/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
50/40 = 50 × 7/40 × 7 = 350/280 - Subtract the two like fractions:
12/280 - 350/280 = 12 - 350/280 = -338/280 - After reducing the fraction, the answer is -169/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/70-50/40 3/70-50/80 9/70-50/40 15/70-50/40 21/70-50/40